PLATE TECTONICS

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Across
  1. 4. A long, deep channel or depression
  2. 5. Moving in opposite directions
  3. 7. Moving toward each other
  4. 8. Structure and movement of the crust
  5. 9. Hot, fluid material under the Earth's surface
Down
  1. 1. Rock that moves over the mantle
  2. 2. Line that marks limits of an area
  3. 3. Moving under another plate
  4. 4. Moving past each other
  5. 6. A long, narrow mountain range